GHSA-qrqq-9c63-xfrg: tower-http's improper validation of Windows paths could lead to directory traversal attack

August 11, 2022

tower_http::services::fs::ServeDir didn’t correctly validate Windows paths, meaning paths like /foo/bar/c:/windows/web/screen/img101.png would be allowed and respond with the contents of c:/windows/web/screen/img101.png. Thus users could potentially read files anywhere on the filesystem.

This only impacts Windows. Linux and other unix likes are not impacted by this.

See tower-http#204 for more details.

References

github.com/advisories/GHSA-qrqq-9c63-xfrg
github.com/tower-rs/tower-http
github.com/tower-rs/tower-http/pull/204
rustsec.org/advisories/RUSTSEC-2022-0043.html

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